Poly BACKBEAT-PRO-2

TALK/STANDBY TIME Up to 24 hours talk and listen time; 6 months standby BLUETOOTH V4.0 Headset/Hands-Free Profile HSP 1.2 and HFP 1.6 (Wideband HD Voice); Class 1 BT Radio AUDIO PROFILES Advanced Audio Distribution Profile (A2DP), AVRCP, AAC APTX CODECS Classic; Low latency RANGE Up to 100 m/330 ft with Class 1 BT Transmitter VOICE ALERTS Enhanced voice alerts announce talk-time, mute, and connection status and more LANGUAGES Spanish, French, Italian, German, Swedish, Norwegian, Danish, Russian, Mandarin, Cantonese, Korean, Japanese DRIVER DIAMETER 40 mm MICROPHONE Boomless dual microphone with DSP FREQUENCY RESPONSE 20 - 20,000 Hz SENSITIVITY (DB SPL/1MW) 93 IMPEDANCE (OHM) 32 BATTERY CAPACITY 680 mAh BATTERY TYPE Rechargeable, non-replaceable lithium ion polymer CHARGE TIME 3 hours for full charge MULTIPOINT TECHNOLOGY Stay connected to two phones and answer from either one (2H2S) WEIGHT 289 g OPERATING AND STORAGE TEMPERATURE 32°F - 104°F (0°C - 40°C)